# PX1 FM Synth vs TONAUT

The clearest difference is update cadence: TONAUT at daily against PX1 FM Synth's every 2 weeks. TONAUT also leads on chart position (#67 vs unranked). On price, rating, ratings volume and ads there is nothing between them.

PX1 FM Synth costs $14.99 and TONAUT $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for PX1 FM Synth against 5.0 for TONAUT. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

PX1 FM Synth ships an update every 2 weeks, TONAUT daily. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | PX1 FM Synth | TONAUT |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/px1-fm-synth/id6785258298/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/tonaut/id6812577930/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Paid | — |
| Best chart rank | — | **#67** |
| Size | 121 MB | 108 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Sjogren](https://appshunter.io/developer/1268263124) | [Richard Rogers](https://appshunter.io/developer/6786053832) |

## What reviewers say

### PX1 FM Synth

[App page](https://appshunter.io/ios/app/px1-fm-synth/id6785258298)

Create rich, wide stereo sounds with a dual-engine FM synthesizer. Explore classic 1980s digital synth tones, from electric pianos to metallic bells, with extensive operator and envelope controls. It functions as a standalone app or an AUv3 plugin for music production.

**Highlights:** Dual independent 6-operator FM engines, 32 classic FM algorithms, Per-operator envelopes and pan, Five macro knobs for sound shaping, Built-in reverb, AUv3 plugin support, Random patch generator

**Features:** Vision Pro support

**In-app purchases:** none


### TONAUT

[App page](https://appshunter.io/ios/app/tonaut/id6812577930)

**Currently charting:** #67 Top Paid · Music (US App Store)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is PX1 FM Synth free?

PX1 FM Synth costs $14.99, with no in-app purchases.

### Is TONAUT free?

TONAUT costs $14.99, with no in-app purchases.

### Which has better reviews, PX1 FM Synth or TONAUT?

PX1 FM Synth and TONAUT are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do PX1 FM Synth or TONAUT have ads?

Neither PX1 FM Synth nor TONAUT shows ads.

### Which is updated more often, PX1 FM Synth or TONAUT?

PX1 FM Synth ships an update every 2 weeks, and TONAUT daily. Most recently, PX1 FM Synth was updated on October 31, 2026 and TONAUT on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*